1 # SPDX-License-Identifier: GPL-2.0-only
3 bool "64-bit kernel" if "$(ARCH)" = "sparc"
4 default "$(ARCH)" = "sparc64"
6 SPARC is a family of RISC microprocessors designed and marketed by
7 Sun Microsystems, incorporated. They are very widely found in Sun
8 workstations and clones.
10 Say yes to build a 64-bit kernel - formerly known as sparc64
11 Say no to build a 32-bit kernel - formerly known as sparc
16 select ARCH_MIGHT_HAVE_PC_PARPORT if SPARC64 && PCI
17 select ARCH_MIGHT_HAVE_PC_SERIO
21 select HAVE_ASM_MODVERSIONS
22 select HAVE_ARCH_KGDB if !SMP || SPARC64
23 select HAVE_ARCH_TRACEHOOK
24 select HAVE_ARCH_SECCOMP if SPARC64
25 select HAVE_EXIT_THREAD
27 select SYSCTL_EXCEPTION_TRACE
31 select HAVE_ARCH_JUMP_LABEL if SPARC64
32 select GENERIC_IRQ_SHOW
33 select ARCH_WANT_IPC_PARSE_VERSION
34 select GENERIC_PCI_IOMAP
35 select HAVE_NMI_WATCHDOG if SPARC64
36 select HAVE_CBPF_JIT if SPARC32
37 select HAVE_EBPF_JIT if SPARC64
38 select HAVE_DEBUG_BUGVERBOSE
39 select GENERIC_SMP_IDLE_THREAD
40 select MODULES_USE_ELF_RELA
41 select PCI_SYSCALL if PCI
42 select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
43 select ODD_RT_SIGACTION
45 select CPU_NO_EFFICIENT_FFS
46 select LOCKDEP_SMALL if LOCKDEP
47 select NEED_DMA_MAP_STATE
48 select NEED_SG_DMA_LENGTH
50 select TRACE_IRQFLAGS_SUPPORT
54 select ARCH_32BIT_OFF_T
55 select ARCH_HAS_SYNC_DMA_FOR_CPU
56 select GENERIC_ATOMIC64
64 select HAVE_FUNCTION_TRACER
65 select HAVE_FUNCTION_GRAPH_TRACER
66 select HAVE_KRETPROBES
68 select MMU_GATHER_RCU_TABLE_FREE if SMP
69 select HAVE_ARCH_TRANSPARENT_HUGEPAGE
70 select HAVE_DYNAMIC_FTRACE
71 select HAVE_FTRACE_MCOUNT_RECORD
72 select HAVE_SYSCALL_TRACEPOINTS
73 select HAVE_CONTEXT_TRACKING
75 select HAVE_DEBUG_KMEMLEAK
81 select RTC_DRV_STARFIRE
82 select HAVE_PERF_EVENTS
83 select PERF_USE_VMALLOC
84 select ARCH_HAVE_NMI_SAFE_CMPXCHG
85 select HAVE_C_RECORDMCOUNT
86 select HAVE_ARCH_AUDITSYSCALL
87 select ARCH_SUPPORTS_ATOMIC_RMW
88 select ARCH_SUPPORTS_DEBUG_PAGEALLOC
90 select HAVE_REGS_AND_STACK_ACCESS_API
91 select ARCH_USE_QUEUED_RWLOCKS
92 select ARCH_USE_QUEUED_SPINLOCKS
93 select GENERIC_TIME_VSYSCALL
94 select ARCH_CLOCKSOURCE_DATA
95 select ARCH_HAS_PTE_SPECIAL
96 select PCI_DOMAINS if PCI
97 select ARCH_HAS_GIGANTIC_PAGE
98 select HAVE_SOFTIRQ_ON_OWN_STACK
100 config ARCH_PROC_KCORE_TEXT
103 config CPU_BIG_ENDIAN
110 config STACKTRACE_SUPPORT
114 config LOCKDEP_SUPPORT
118 config ARCH_HIBERNATION_POSSIBLE
119 def_bool y if SPARC64
125 config HAVE_SETUP_PER_CPU_AREA
126 def_bool y if SPARC64
128 config NEED_PER_CPU_EMBED_FIRST_CHUNK
129 def_bool y if SPARC64
131 config NEED_PER_CPU_PAGE_FIRST_CHUNK
132 def_bool y if SPARC64
143 config GENERIC_ISA_DMA
147 config PGTABLE_LEVELS
151 config ARCH_SUPPORTS_UPROBES
152 def_bool y if SPARC64
154 menu "Processor type and features"
157 bool "Symmetric multi-processing support"
159 This enables support for systems with more than one CPU. If you have
160 a system with only one CPU, say N. If you have a system with more
163 If you say N here, the kernel will run on uni- and multiprocessor
164 machines, but will use only one CPU of a multiprocessor machine. If
165 you say Y here, the kernel will run on many, but not all,
166 uniprocessor machines. On a uniprocessor machine, the kernel
167 will run faster if you say N here.
169 People using multiprocessor machines who say Y here should also say
170 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
171 Management" code will be disabled if you say Y here.
173 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
174 available at <https://www.tldp.org/docs.html#howto>.
176 If you don't know what to do here, say N.
179 int "Maximum number of CPUs"
181 range 2 32 if SPARC32
182 range 2 4096 if SPARC64
183 default 32 if SPARC32
184 default 4096 if SPARC64
186 source "kernel/Kconfig.hz"
188 config GENERIC_HWEIGHT
192 config GENERIC_CALIBRATE_DELAY
196 config ARCH_MAY_HAVE_PC_FDC
200 config EMULATED_CMPXCHG
204 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
205 is emulated, and therefore it is not completely atomic.
211 depends on SPARC32 && SMP
216 depends on SPARC64 && SMP
219 bool "Support for early boot text console"
223 Say Y here to enable a faster early framebuffer boot console.
226 bool "Support for hot-pluggable CPUs"
227 depends on SPARC64 && SMP
229 Say Y here to experiment with turning CPUs off and on. CPUs
230 can be controlled through /sys/devices/system/cpu/cpu#.
231 Say N if you want to disable CPU hotplug.
234 source "drivers/cpufreq/Kconfig"
238 tristate "UltraSPARC-III Memory Controller driver"
242 This adds a driver for the UltraSPARC-III memory controller.
243 Loading this driver allows exact mnemonic strings to be
244 printed in the event of a memory error, so that the faulty DIMM
245 on the motherboard can be matched to the error.
247 If in doubt, say Y, as this information can be very useful.
249 # Global things across all Sun machines.
250 config GENERIC_LOCKBREAK
253 depends on SPARC64 && SMP && PREEMPTION
257 depends on SPARC64 && SMP
260 int "Maximum NUMA Nodes (as a power of 2)"
265 Specify the maximum number of NUMA Nodes available on the target
266 system. Increases memory reserved to accommodate various tables.
268 config ARCH_SPARSEMEM_ENABLE
269 def_bool y if SPARC64
270 select SPARSEMEM_VMEMMAP_ENABLE
272 config ARCH_SPARSEMEM_DEFAULT
273 def_bool y if SPARC64
275 config FORCE_MAX_ZONEORDER
276 int "Maximum zone order"
279 The kernel memory allocator divides physically contiguous memory
280 blocks into "zones", where each zone is a power of two number of
281 pages. This option selects the largest power of two that the kernel
282 keeps in the memory allocator. If you need to allocate very large
283 blocks of physically contiguous memory, then you may need to
286 This config option is actually maximum order plus one. For example,
287 a value of 13 means that the largest free memory block is 2^12 pages.
290 source "kernel/power/Kconfig"
294 bool "SMT (Hyperthreading) scheduler support"
295 depends on SPARC64 && SMP
298 SMT scheduler support improves the CPU scheduler's decision making
299 when dealing with SPARC cpus at a cost of slightly increased overhead
300 in some places. If unsure say N here.
303 bool "Multi-core scheduler support"
304 depends on SPARC64 && SMP
307 Multi-core scheduler support improves the CPU scheduler's decision
308 making when dealing with multi-core CPU chips at a cost of slightly
309 increased overhead in some places. If unsure say N here.
312 bool "Default bootloader kernel arguments"
316 string "Initial kernel command string"
317 depends on CMDLINE_BOOL
318 default "console=ttyS0,9600 root=/dev/sda1"
320 Say Y here if you want to be able to pass default arguments to
321 the kernel. This will be overridden by the bootloader, if you
322 use one (such as SILO). This is most useful if you want to boot
323 a kernel from TFTP, and want default options to be available
324 with having them passed on the command line.
326 NOTE: This option WILL override the PROM bootargs setting!
332 Enable power management and CPU standby features on supported
336 tristate "Sun4m LED driver"
339 This driver toggles the front-panel LED on sun4m systems
340 in a user-specifiable manner. Its state can be probed
341 by reading /proc/led and its blinking mode can be changed
342 via writes to /proc/led
344 config SERIAL_CONSOLE
349 If you say Y here, it will be possible to use a serial port as the
350 system console (the system console is the device which receives all
351 kernel messages and warnings and which allows logins in single user
352 mode). This could be useful if some terminal or printer is connected
355 Even if you say Y here, the currently visible virtual console
356 (/dev/tty0) will still be used as the system console by default, but
357 you can alter that using a kernel command line option such as
358 "console=ttyS1". (Try "man bootparam" or see the documentation of
359 your boot loader (silo) about how to pass options to the kernel at
362 If you don't have a graphics card installed and you say Y here, the
363 kernel will automatically use the first serial line, /dev/ttyS0, as
369 bool "Sparc Leon processor family"
371 select USB_EHCI_BIG_ENDIAN_MMIO
372 select USB_EHCI_BIG_ENDIAN_DESC
373 select USB_UHCI_BIG_ENDIAN_MMIO
374 select USB_UHCI_BIG_ENDIAN_DESC
376 If you say Y here if you are running on a SPARC-LEON processor.
377 The LEON processor is a synthesizable VHDL model of the
378 SPARC-v8 standard. LEON is part of the GRLIB collection of
379 IP cores that are distributed under GPL. GRLIB can be downloaded
380 from www.gaisler.com. You can download a sparc-linux cross-compilation
381 toolchain at www.gaisler.com.
384 menu "U-Boot options"
386 config UBOOT_LOAD_ADDR
387 hex "uImage Load Address"
390 U-Boot kernel load address, the address in physical address space
391 where u-boot will place the Linux kernel before booting it.
392 This address is normally the base address of main memory + 0x4000.
394 config UBOOT_FLASH_ADDR
395 hex "uImage.o Load Address"
398 Optional setting only affecting the uImage.o ELF-image used to
399 download the uImage file to the target using a ELF-loader other than
400 U-Boot. It may for example be used to download an uImage to FLASH with
401 the GRMON utility before even starting u-boot.
403 config UBOOT_ENTRY_ADDR
404 hex "uImage Entry Address"
407 Do not change this unless you know what you're doing. This is
408 hardcoded by the SPARC32 and LEON port.
410 This is the virtual address u-boot jumps to when booting the Linux
418 menu "Bus options (PCI etc.)"
428 bool "Sun Logical Domains support"
431 Say Y here is you want to support virtual devices via
436 depends on PCI && SPARC32 && !SPARC_LEON
441 depends on PCI && SPARC_LEON
445 bool "GRPCI Host Bridge Support"
449 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
450 PCI host controller is typically found in GRLIB SPARC32/LEON
451 systems. The driver has one property (all_pci_errors) controlled
452 from the bootloader that makes the GRPCI to generate interrupts
453 on detected PCI Parity and System errors.
456 bool "GRPCI2 Host Bridge Support"
460 Say Y here to include the GRPCI2 Host Bridge Driver.
462 config SUN_OPENPROMFS
463 tristate "Openprom tree appears in /proc/openprom"
465 If you say Y, the OpenPROM device tree will be available as a
466 virtual file system, which you can mount to /proc/openprom by "mount
467 -t openpromfs none /proc/openprom".
469 To compile the /proc/openprom support as a module, choose M here: the
470 module will be called openpromfs.
472 Only choose N if you know in advance that you will not need to modify
473 OpenPROM settings on the running system.
479 depends on SPARC64 && PCI
481 config SPARC64_PCI_MSI
484 depends on SPARC64_PCI && PCI_MSI
493 select ARCH_WANT_OLD_COMPAT_IPC
494 select COMPAT_OLD_SIGACTION
496 config SYSVIPC_COMPAT
498 depends on COMPAT && SYSVIPC
501 source "drivers/sbus/char/Kconfig"